Pb_(0.92)Sr_(0.08-x)Ba_x(Sb_(2/3)Mn_(1/3))_(0.05)Zr_(0.48)Ti_(0.47)O_3的制备与性能研究  

Preparation and Properties of Pb_(0.92)Sr_(0.08-x)Ba_x(Sb_(2/3)Mn_(1/3))_(0.05)Zr_(0.48)Ti_(0.47)O_3

作　　者：徐腾威 甘国友[1] 严继康[1] 杨坚[1] 李震宇[1] 郭根生[1] 

机构地区：[1]昆明理工大学材料科学与工程学院稀贵及有色金属先进材料教育部重点实验室云南省新材料制备与加工重点实验室昆明市稀贵及有色金属先进材料重点实验室,昆明650093

出　　处：《人工晶体学报》2016年第12期2807-2811,共5页Journal of Synthetic Crystals

基　　金：国家自然科学基金(51262017);稀贵金属先进材料协同创新基金(14051708);稀贵金属综合利用新技术国家重点实验室开放基金(SKL-SPM-201502)

摘　　要：采用传统固相烧结法制备了Pb0.92Sr0.08-xBax（Sb2/3Mn1/3）0.05Zr0.48Ti0.47O3（PSBSM-PZT）压电陶瓷样品。研究了不同Sr2＋、Ba2＋掺杂含量对样品的相结构、微观形貌、压电和介电性能的影响。结果显示：所有样品均为钙钛矿结构。而当x=0.02-0.06时,陶瓷样品组分位于准同型相界区（MPB）。由于位于准同型相界区域的陶瓷样品对于电畴的转向具有促进作用,所以处于MPB区域的陶瓷样品具有较大的压电和介电性能,但同时由于电畴转向带来的较大内摩擦和结构损耗,从而提高了材料的机械损耗和介电损耗。当x=0.02时的陶瓷样品获得最佳的综合性能：d33=346 pC/N,kp=0.58,Qm=1217,εr=1724,tanδ=0.774%。Pb0.92Sr0.08-xBax（Sb2/3Mn1/3）0.05Zr0.48Ti0.47O3 piezoelectric ceramics were prepared by aconventional solid state reaction method. The effects of Sr2＋ and Ba2＋ doping content on the phase structure, microstructure, piezoelectric and dielectric performances of samples were systematically investigated. The results show that： all samples are perovskite structure, and the samples component is located in the morphotropic phase boundary （MPB） when x =0.02-0.06. Due to the samples could promote turn of ferroelectric domain in the morphotropic phase boundary, the sample has a larger piezoelectric and dielectric properties in the MPB. But at the same time, due to the large internal friction and structural loss for turn of ferroelectric domain, the mechanical dielectric loss of the material improve. The best combination property are obtained when x =0.02 ： d33 =346 pC/N, kp =0.58, Qm = 1217, εr = 1724, tanδ =0. 774%.

关 键 词：压电陶瓷 PMS-PZT 介电损耗 

分 类 号：TQ174[化学工程—陶瓷工业]